Exchange the Needle Seat

对于生物兼容性模块，只能使用生物 / 生物兼容部件！

请勿与生物惰性部件混用。

适用于

所需工具

数量		部件号	描述
1		8710-0510	开口扳手 1/4-5/16 英寸

所需部件

数量		部件号	描述
1		G4267-87012	高压针座，0.12 mm (PEEK) (for G7167C) OR
1		G7137-87012	生物兼容性高压针座组件 0.12 mm (for G7137B)

数量

部件号

描述

G4267-87012

高压针座，0.12 mm (PEEK)

(for G7167C)

G7137-87012

生物兼容性高压针座组件 0.12 mm

(for G7137B)

前提条件

Finish any pending acquisition job.
Stop the flow at the pump and remove the solvent lines from the eluent bottles to avoid spilling solvent.
Close the shutoff valves at the pump if available.

警告

没有罩的进样针有造成人身伤害的危险

没有罩的进样针有对操作人员造成伤害的危险。

In the Local Controller start the maintenance mode and select Change needle/seat function.

OR

In the Agilent Lab Advisor software select Service & Diagnostics in the system screen Maintenance Positions > Change Seat , click Start and wait until the needle assembly is in maintenance position.
Open the front door.
Slightly pull (1.) the front clip that holds the needle seat in position. Then carefully lift (2.) the complete leak tube needle assembly from the holder.
Close the front door.
In the Local Controller close Change needle /seat.

OR

In the Agilent Lab Advisor software Change Seat click Back and wait until the needle assembly is in the needle park position.
For G4767A, end the procedure with a Pressure Test.
For G7167C and G7137B, proceed with the subsequent steps.
Perform Hydraulic Path Leak Test.
Perform Sampler Leak Test if needed for troubleshooting in case of Hydraulic Path Leak failure.

注意

Always flush the sampler with fresh solvent and perform a Pressure Test before using the Auto Clean or Prime function after exchanging a needle seat.

21-6月-2025